Automatic control of heat from radiators.



J.IB. MCKEOWN. AUTOMATIC CONTROL OP HEAT FROM BADIATORS.

J. B. MGKEUWN. AUTOMATIC CONTROL OF HEAT FROM RADIATORS. H APPLICATION FILED SEPT. 18. 1907.

908,797. I v Patented Jan. 5, 1909.

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J.' ByMGKEoWN. AUTOMATIC CONTROL OF HEAT PROM RADIATORS.

APPLICATION FILED SEPT.18, 1907.

Patented Jan. 5, 1909.

3 SHEETS-SHEET 3.

late to regulate the temperature of the apart` a feed-box connected thereto, upon the feed-box for admitting UNITED sTnTEs PATENT oEEioE.

JOSPH B..MCKEOWN, OF UNION HILL, NEW JERSEY.

AUTOMATIC CONTROL OF HEAT FROM RADIATORS.

F ing radiator, ,and the invention operates to the radiator.

y In this invention, the temperature of the air in the room is regulated by inclosing the radiator' in a casing and circulating the air more or less through the casing in accordance with the temperature of the room. The apparatus 'consists of the radiator which is supplied continuously with the heating fluid so Aas to bev kept at a substantially eonstant temperature, a casing inlosing the radiator with an` outlet at the top for the heated air and an inlet at the bottom having with a damper the air of the room to the casing, and a thermostat in the Without varying thc supply of heating 'luid Vfeed-box with connections to the damper for opening the same in proportion as the air in the room becomes cooled.

Heretofore, thermostats" have been used in connection with .heating apparatus for opening and closing the valve which supplies the `heating fluid and also for opening and closing a damper which admits air from the exterior ot' the room, andA l do not therefore claim the combination of a thermostat with a valve or damper; but my invention avoids all connections for supplying air from the exterior of the room and furnishes attachments which can be applied to any radiator' which is already in use in an apartment, and operment in the desired manner.

Where the thermostat operates upon the steam or Water-valve, its operation results at times in cutting oil1 the heating fluid entirely, so that the radiator becomes cold and considerable time is required to re-heat the radiator when the room becomes cooled.i The resent invention not onl r avoids this difnculty but obviates the expense of conduct- Specification-of Letters Patent.

Application mea september 1s, 1907.- serial No. '393,4

Patented Jan. 5, 1909.

' ing an air supply from the exterior of the building to the radiator.

By my construction the supply of heating fluid to the radiator is not varied and no sup ply of exterior air is required, but the tem,-

erature of the room is varied and controlled Ey automatically regulating the ilow of such air from the room into the radiatorcasing and out ol the same when heated. n

In the drawing, Figure .l is an elevation of a regulator casing containing a radiator and the regulatiruT apparatus; Fig. V2 shows the inner end of tie feed-box 'which delivers the air of the room into the radiator casing, the 'View being taken in the direction of the dam-` per on the upper side of Fig. 3; and showing the damper opened; Fig. 2LI shows one end of closed; Fig. 3 is a plan of the feed-box with the top removed to expose the thermostat fixtures; Figs. 2 and 3 being upon a larger scale than Fig. 1, and Fig. 2a upon a still larger scale. Fig. 4 is a plan of the radiator easing and feed-box u'on asmaller scale than Fig. 3, With dotted) lines indicating the position Vot the radiator within the casing above the feed-box.; Fig. 5 is a view similar to Fig 2 with the damper partly o ened; Fig. 6 is an enlarged View of one of t stat spools and bands; Fig. 7 is a perspective view of the parts which operate directly upon the damper; and Fig. 8 'is a perspective view excepting the front of the casing Where`1t is broken, away to expose the feed-box, the radiator being indicated in outline by dotted lines only, for the same pur Jose.

u designates theradiator with its legs b resting upon the Hoor c. The casing dis shown surrounding the radiator `the floor and the supply-pipe f extended throughthe ends of the caslng.. The casing is entirely open at the top, or otherwise formed with an outletfor the heated air and a feedbox having ends y and a to 'h is shown within the bottom of the easing etween the 'legs ofthe radiator, and attached to the front of the casing by lugs An aperture is shown in the easing between the lugs i, and admits air into the feedbox passing 'above and below' a bearing-bar 7c which extends across the feedbox inside the aperture y'.

The inner end of the ee'dbox is provided with a plate Z having an aperture Z there- 'shown mounted upon the plate 'Z over the ape thermothrough, and damper slides m and n are a similar plan enlarged, with the damper of the Whole construction as shown in Fig. l,

and extending to erture Z The damper lslidesare provided respectively with slots m and n', which Whencoincident permit air from the room to pass through the box and through the slots into the radiator casing below the radiator.v Two damper slides with slots m and n are used to secure a full opening of the slotsl with a' movement of only one half their width. When the radiator is heated,` its effect upon the temperature of the room is largely dependent upon the openingl of thesey dampers, as the iioyv of air-over t e heatedrad1ator tends to raise the temperature of the apartment. To o erate the dampers, a thermostat' is provi ed in the feed-box constructed as follows; a cross head o is mounted by a shank 0 in a bearing in the late l, the shank being extended through a s otl in the slide m, and the crosshead lyin between ears p and p formed upon the sli es m and n at opposite sides of the Vvcrosshead. The ears are pressed normally toward one another and toward the crosshead 0 by springs g, which springs tend to move theslots m and ln into coincidence. The shank of the crosshead is turned, by a spring r, normally into the position shown in Fig. 2; to close the slots and shut 0H the movement of air through the feedbox. The movement of the crosshead'is automatically controlled by the'expansion 'and contraction of metallic bands s extended between two series o'f spools t and t2, which are mounted to turn loosely upon two aral-l lel spindles u and u". The band at one end ofthe series is attached to the shank o ofthe crosshead, andv atthe opposite end toan adjusting screw 0. Each siool, as shown in Fig. 5, is provided with a ub t', and the opposite ends of the bands are connected respectively to the reverse sides of the spools and hubs dpon the opposed spindles. By

this construlrtion, the contraction of the bands under a reduction of tem erature,

' which is securedby making them o suitable metal, like sheet zinc, is gradually exaggerated so as to turn the crosshead o nearly a quarter turn in a variation -of ten degrees Fah. of temperature. The contraction' of the bands expands the springvr and operates to open the slots m, and n. ithin a smaller range of temperature than ten degrees, the

y crosshead is turned into an oblique position,

and the shutter-slots are thus more orless opened or closed as shown in Fig. 5. The

falling of temperature in the room, whichl supplies the aiijto the feedbox, thus causesa retraction ofgtgbands and an opening of the damper slotsjwhich thus permit a current of air t pass through the radiator casing d.

As the radiator is kept constantly heated,.

- such air is instantly heated and the temperaraised to a vinto the feed ox operates to expand the therture of the room is very quickl aected, and oint Where the 0W of the air The ra iator shown is oneof an ordinary y type comprised of a series of vertical sections with feet upon the end sections ibetween which a feed-box can be readily inserted, and

my present construction is .therefore suchr sov that 1t can be 'readily proportioned to 'lit any radiator already located in a room, and when applied-to such a radiator operates to automatically regulate the tein erature of the room. The device may. t ereiore be regarded as an attachment for radiators, operating independently of all agencies exterior to the room and requiring onlzy that the radiator should be continuously supplied with the heating iiuid. y

Having thus set forth the natureof the invention what is claimed herein is 1. The combination, with a radiator' ar- ,ranofed in a room and kept constantly heated.,

of the casing surroun ing the radiator and having an out et at the top and an inlet near the bottomadmittng arr from/the room Within the casing, L e radiator having legs near the opposite ends ci the casing, the feed-box g extended from the inlet Within the bottom of the casing between' the said legs, a thermostat located Within the feedy i box in'the current of lair, entering from the rodm, and a damper controlled by the thermostat and operating to vary or cut oil' the passageA of air throigh the casing, substantially as herein set torth. l

2. The combination, with a radiator situated in a room and kept constantly heated, of

the casing d surrounding the radiator and 'having an outlet at the top and an inlet j near the bottom, the radiator having legs near the opposite ends of the casing, the

feedbox pext'ended from the inlet withinthe bottom o the casing between the legs-oi the radiator and having the sliding damper n' o ening into the bottom of the casing, and a t ermostat located Within the feed-bosrand connected to the dam er, the whole arran edand' operated su stantially as herein setl orth.l

In testimony whereof I have hereunto set myhand in the presence of two subscribing Witnesses.

v JOSEPH B. lvioKEOVlN.` Witnesses: v

L. LEE, THOMAS S. CRANE. 

